For a family who has made it through some dark times, Luke Bryan brightens their day.

Diane Taylor, was in desperate need of a miracle when she learned that her kidneys were shutting down. Lisa, her oldest daughter (and a mother as well) was her saving grace and gave up one of her kidneys in order to save her mom.

"If I didn't do something, I was going to die. If Lisa wasn't here and able to step up, I wouldn't be here talking to you today."

Originally, Lisa had submitted her story to a show called "Knock Knock Live" and had received a call saying they wanted to air the story...but the show was cancelled before it could air.

From that submission, the producers of Knock Knock Live had gotten ahold of Lisa's all-time favorite artist, Luke Bryan and he was overjoyed at the opportunity to spend a day with this incredibly selfless young lady.

Luke posted the full story to his own Facebook page and it shows his entire fun-filled day with Lisa, her sister, and mom Diane.

When Lisa opened the front door and saw Luke standing there, she absolutely LOST it! Tears, screaming, hugging, you name it...he definitely made this young lady's day!